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JQ'O. MORTZ. Ore Feeder for Crushing; Mills.

No. 229,903. Patented July 13, 18,80.

Witnesse NITED STATES PATENT OFFICE.

JOSEPH O. MORTZ, OF SAN FRANCISCO, GAL, ASSIGNOR OF ONE-HALF OF HISRIGHT TO LEONARD GOSS AND HORACE ADAMS, OF SAME PLACE.

ORE-FEEDER FOR CRUSHlNG-MILLS.

SPECIFICATION formingpart of Letters Patent No. 229,903, dated July 13,1880,

Application filed November 21, 1879.

To all whom it may concern:

Be it known that I, JOSEPH O. MORIZ, of the city and county of SanFrancisco, and State of California, have invented an Ore- Feeder forCrushing-Mills; and I hereby declare the following to be a full, clear,and exact description thereof.

My invention relates to certain improvements in ore-feeders forquartz-mills; and my improvements consist in .providing a cylinder orconveyer in which is a piston or plunger placed below a hopper, and soconnected with an operating-lever and weight or spring that theaction ofthe stamp and operatinglever will cause a reciprocating motion of theplunger which will feed the ore forward to the battery by a directaction, in combination with a spring check-bar, by which lumps or massesof ore are retained and prevented from falling suddenly into thebattery, as is more fully described in the accompanying drawings, inwhich- Figure l is a perspective view of my invention. Fig. 2 is avertical section.

On a suitable frame, A, is mounted a cylinder, B, one end of which isopen, as shown, the rear end having a head, through which projects therod 0, carrying the piston D.

An opening is formed in the upper central portion of the cylinder, intowhich projects the lower end of the hopper E, through which the ore fromthe rock-breaker is fed to the cylinder of the ore-feeder.

A bell-crank lever, F, having a weight, f, connects with the rear end ofthe piston-rod O, and is fastened on the rock-shaft G, the crank ofwhich is connected by a link, g, with the operating-lever H, as shown.This operating-lever is so placed that the tappet on one of thestamp-stems will come in contact with its end at each drop. As the outerend of this lever H is forced down by the tappet of the stamp-stem thebell-crank lever pushes the piston forward, which, in turn, forcesforward the body of ore in the cylinder B. As the leverH is released theweight or spring on the lever F draws the piston back. A certain portionof the ore in the hopper can then fall into the cylinder in front of thepiston.

Across the front open end of the cylinder or conveyer is placed acheck-bar, I, the object of which is to prevent any mass of ore fromdropping suddenly into the battery.-

While working, the cylinder will remain nearly full at all times, eachaccession of ore dropping in'behind that already in, and the forwardpart of the mass falling off into the mortars.

When the ore is damp it will stick together more or less, and were itnot for the check-bar more than is wanted might fall out of the cylinderat one time. The check-bar will prevent any mass falling into themortar, and only that at the bottom of the cylinder will be pushed outby the piston.

The whole body of ore in the cylinder is moved forward at once; but thenatural slope of said ore is such that only a certain proportion at atime of that at the lower front of the cylinder will fall.

The ore is entirely inclosed and confined in the cylinder, and t eaction is such that the feed is direct, and there is no chance for thore to spread. I

The cylinder will admit of the ore being fed for any required dlstance,and it will not be necessary to put the feeder immediately in front ofthe battery.

The ore-carrying conveyer'(represented by the cylinder) need not beround, but may be oblong, or any desired shape in which a plunger orpiston may be operated.

This machine will feed directly, and the amount may be regulated by theoperatinglever in any of the ordinary methods. It will feed dry or wetore equally well.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-- 1. The ore-conveying cylinder B, providedwith a piston, D, and piston-rod 0, connected by a weighted or springbell-crank lever, F, with the rock-shaft G, in combination with theoperating-lever H, the stem of a stamp-mill, and a feeding-hopper, E,substantially as herein described.

2. In combination with the ore-conveying cylinder B, with its piston Dconnected with the operating-lever H, the spring check-bar I across theopening of the conveyer, whereby masses of ore are prevented fromfalling from the conveyer, substantially as herein described.

In witness whereof I have hereunto set my hand.

Witnesses: JOSEPH O. MORTZ.

FRANK A. BRooKs, S. H. NOURSE.

